Amtrak 336 (Southbound Hiawatha) has NPCU 90368 leading and 28 pushing. Departed Milwaukee Gen. Mitchell airport on the advertised. I'll try to get a count on the number of coaches when I disembark at CUS.

Edit to add: 6 Coaches. 4 horizons sandwiched between 2 amfleets. The amfleets had refurbished new leather seats and were designated the quiet cars. I rode in the center of the rear amfleet in last row of forward facing seats. Very comfortable; very nice and quiet. Even with the power chugging along right behind me.